GMC Yukon XL (2018) is 845 mm (33.27 inch) longer, 185 mm (7.28 inch) wider, 420 mm (16.54 inch) higher and has 1619 liters (57.17 ft3) bigger cargo space than Kia Optima Sportswagon (2015).
Kia Optima Sportswagon (2015) is 995 kg (2,194 lbs) lighter than GMC Yukon XL (2018).